creighton



Feb. 14, 192s. 1,659,518

N. B. CREIGHTON FLUID SHUT-OFF DEVICE Filed April 12, 1927 ATTORN EY Patented Feb. 14, 1928.

UNI-TED STATES j l 1,659,518 PATENT OFFICE.

NELSON B. CREIGHTON, `OF NEW YORK, N. Y., ASSIGNOR TO ALBERT H. STINES ANDr.

. P. .FRANK RYAN, BOTH OF 4NEW YORK, N. Y.

rLUIn-sHUT-orr DEVICE.

Application filed April 12, 1927.

This invention relates to an improved fluid shut-ott' device and has for an object to provide an improved structure whereby the device may be operated by a pull or push manually, in addition to an automatic operation.

Another object is to provide an improved link release construction and positioned to function by a manual push or pull.

A still further object of the invention is 'to provide a manually actuated sliding pusher for releasing the fusible link whereby the device may be caused to function at any time.

In the accompanying drawing- Figure 1 is a side view of a shut-off valve, partly in section, showing an embodiment of the invention.

Figure 2 isy an edge view of the structure shown in Figure 1.

Figure 3 is an elevation of the structure shown in Figure 1, the same being taken at right angles to Figure 2.

Figure 4 is av fragmentary plan view showing part of the structure disclosed in Figure 1, the pusher being shown in an operated position.

Figure 5 is a detail sectional View through Figure 4 on line 55.

Referring to the accompanying drawing by numerals, 1 indicates the casing of a valve and 2 the spring pressed valve. The casing 1 is provided with an extension 3 which carries a rock shaft 4 having an arm (not shown) which engages the valve stem 5 for opening the valve 2 against the action of s ring 6. These parts just described are o d as far as this application is concerned, and therefore, will not need any further description. A lever 7 is rigidly secured to the shaft 4 and acts to hold valve member 2 open when the lever is held in the position shown in Figure 1. The free end of lever 7 is provided with a link receiving lug or projection 8 whereby it may project through one of the eyes in the fusible link 9, the eye at the opposite end fitting over a stationary hook 10. By reason of this structure, the link 9 and lever 7 normally hold the valve member 2 open for the freeV passage of gas or otherV fluid. In case of fire, the link 9 or part thereof, will melt and thereby release lever 7 whereupon spring 6 will quickly act to close the valve member 2.

Under some circumstances it may become desirable to manually close the valve, either from a position near the valve or from a serial No. 183,119.

distant point. When a person is standing near the valve, lever 11 may be moved manually over into the dotted position shown in Figure 1 and valve member 2 will be released as hereinafter fully described. In case the person is at a distance, the rod or cable 12 is pulled and the same result is secured, namely, the closing. of valve member 2. The lever is vformed with a partially circular socket 13 surrounding the rounded end 14: of lever 7. The socket 13 merges into an arm 15 carrying a pivotal pin 16 which extends through one end of the pusher' 17. This pusher is preferably square in cross section as shown in Figure 5, and is guided by the U-shaped strap or arch 18 extending from lever 7 through which it loosely extends. The operating end of the pusher 17 is widened and sharpened so as to form substantially a triangle in cross section. the triangle normally rests loosely against the eye 8 (Figure 1) so that as .soon as lever 11 is swung to the dotted position shown in Figure 1, arm 15 will push the pusher 17 sufficiently to force the eye 8 off the lug 8. As soon as this has been done, the lever 7 is free and spring 6 will immediately move the valve member 2 to a closed position. It will be noted that lever 7 swings independently of arm 15 and moves away from arm 15 as soon as released, notwithstanding the fact that the rod or cable 12 may be held continually under tension.

To restore the parts, simply swing lever 7 back into the position shown in Figure 1,

and then swing the link 9 back so that the eye 8 will fit over lug 8. This movement will cause link 9 to force the pusher 17 back to its former position.

What I claim is:

1. A fluid shut-olf device, comprising a valve casing, a valve member in said casing, 1 a spring acting to close said valve member, means including a lever for normally holding said valve member open, a fusible link for holding said lever whereby the lever will hold said valve member open, a pusher' positioned adjacent said link, said pusher including a pivotally mounted arm, a pusher link pivotally connected to one end of said arm and with the other end adjacent said fusible link, a guide for guiding said pusher link, and a lever extending from said arm for pivotally swinging said arm to cause said pusher link to move said fusible link to an One of the edges of inoperative position, and manually vactuated in a certain position, a pusher cpivotally con- 10 means for swinging said lever in one direc* 'neoted to the free end of sai arm, means tion. for guiding said pusher When voperated by p' 2. In a shut-off valve provided with a rock said arm whereby the pusher Will force said shaft having a tendency to move in one dilink vto a position out of engagementwith-` rect-ion, a lever rigidly secured to saidrook said lever and thereby release the lever, and 15 shaft, an arm pivotally mounted on said manually actuated means for causing said rock shaft, a link operatively engaging the arm to function.V .u

free end of said lever for holding the lever NELSON B. CREIGrHTON. 

